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| All Patents in class 292/291 | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 496,887 | May 09, 1893 | J.H. Matthews | Door Securer | |
 | 1,434,411 | Nov. 07, 1922 | M.L. Silverstein | Emergency Door-Lock and Utility Instrument | |